Method of manufacturing basic-lead sulphate



Sept., 29, 1925. 1555,53@

B. s. wHn-E HBH-HOD 0F' MANUFACTURING BASIC LEAD SULPHATE Filed April 8. 1924 Patented-Sept. v29, 1925.

uul'rsusfra'rus``` natuur ori-lcs l BERNARD S. WHITR-DFJOPLDL, IMISSOUB, ASSIGNOR T0 THE EAGLEJICHEB LEAD i 09mm, CINCllfll'liiiil!1'.,l OHIQA. CRPMTION, 0F OHIO.

saumon or mmurucruma maremma scanners. i'

' aetnanet areaapu "a 1924.' 'semi nascente. l

e To all whomitmag-/- l Be it known. that I, BERNAD'S. Wurm,

v a citizen of the United States of America,

and resident of Joplin, countyof Jasper, State or Missouri, ave invented La certain new and useful Improver'nent.yiuhethodsA vof Manufacturing-BasiceLeadl Sulphate, of

.Which the-followm'gis a'true and 'exact deqscription, reference being. had-.to thea'ccom- 10 lpanying drawings, which.l form a partthere-v My invention relates` to the manufacture of basic 4lead su1phate-an`dhasfor its object to utilizeas a raw material. for suchmanul5 facture thev by-products of. lead smelting operations consisting generally Aof mixtures of lead sulphate, basic lead sulphate, lead sulphide and' sometimes lead f sulphite. These lead bearing/materials and. some car.-

bon occur in 'varyin proportions, depending on. themanner m which the smelting operation is carried out; Heretofore, such .Y lay-.products have `been utilized for the-prof duction of basic: leadisulphate by a direct 2f smelting operation in whichia large 'pro orf ,tion of theirleadcotentsis. reduce to metallic lead or they havebeensmelted under conditions which. -wll reduce their lead contents vto metallic lead with .little 'or noproduction of leadsulphate. 'I have -ds- Th coveredthat b indin 'thelead by'f'prodnets to a finelyste of subdivision and injecting the v finely divided material into a highlyheatedfurnaoe together with sulphur dioxide gas and airain regulatedproportion to theascert'ained chemical composition of the lead by-products,r a Abasic lead sulphate of the desired-b'asicity and .excellent quality can be produced.

In the practical use ofmy invention, the Alead by-'products availablel are carefully analyzed and properlyv mixed `to Agive a mixed roductfofv approximately uniform composition, suitable' for treatment. The

r mixed b -productsare then finely'v ground and in f ely 'divided-form sprayed into a furnace chamber 4internally heated by-an oil`v or gas flame and at the same time, sulphur dioxide as and `a1r are iuyecte'd into the f furnace 1n regulated quantity to react with l' -a portion' of 'the lead-oxide and produce a basic leadl sulphatefoit the desired quality.

The basic lead suiphateproduoed by my process from lead ley-products com ares favera-big in quality "with the basic lead sulphate eretofore produced b other methods and sold 'under the 4name ublimed White Lead 'and my process results -in a material economy, over previously known methods [of utiliain such byproducts.' y In. the rawing l havediagrammatically illustrated foruse in my process. furnace having an openin B throghlw'hich the" nely divided bypro ucts, VueLjar'and sulphur dioxide gasare .introduced,.and an outlet C.. .As shown, and troduce the fuel, vided lead by-pro y a single nozzle'D. E lindicating a mecha- .nism for feeding ythe byproduct'sto the'liozzle, lilI the fuel conduit leading' to the, nozzle and G a ppe through'which ajet-'ofairis forced into `the nozzle.y device the fuel, leadhy-p'roductjs and air enter the furnace in a combin'edjet'which produces the best distribution in the furnace. Hl indicates a pipejby which sulphur dioxide 'as isintroduced.

re-ferably, v in-l n as or oil, the finely d- Having nowdescribed my invention, what I claim as new -and desire to ,ters Patent, is: l

l. The method of a furnace and apphances suitable' A indicating the -By-P this or a likev sf'ec'ure4 by'lvlflet'- mating lead By; rodrif-uref temprature, Say 1100" ucts, consisting in large proportion of' asic Vlead sulphate and recoveredinV the smelti of lead ores and products, for the economi- Vcal reduction of basic.. lead sulphate of ook commercial quality which con'sistsin nely dividing the by-product s, projecting them 1n a spray into a highly heated fur-- nace and simultaneously projecting into the furnace sulphur dioxide gas-andalr iti-regu' lated 'quantity to react with Athe'lex'uzl products and roducsa of the desired asicity 2, The method of treating l ucts, consisting in large proportion of" asic leadby? i' lead sulphate and recovered in the smelting spray in intimate admixture with fuel and of lead ores and products, for the economical air into a highly heated furnace and simulproduction of basic lead sulphate of good taneously projecting into the furnace sul- 10 commercial quality which consists in finely phur dioxide gas in regulated quantity to 5 dividing the by-products, mixing them with react With the lead products and produce a fuel and air prior to injecting them into the basic lead sulphate of the desired basicity. furnace, projecting the by-products in a BERNARD S. WHITE. 

